Abstract: The present invention relates to an apparatus and a method for preparation of quantum dots capable of continuously preparing quantum dots having uniform luminous properties using Taylor vortices. The apparatus for preparing quantum dots according to the present invention includes a first Couette-Taylor reactor for forming a core, core precursor sources each connected to the first Couette-Taylor reactor to supply a core precursor, a second Couette-Taylor reactor for forming a shell, and a shell precursor source connected to the second Couette-Taylor reactor to supply a shell precursor. In this case, the first and second Couette-Taylor reactors are connected to each other so that a core generated in the first Couette-Taylor reactor is supplied to the second Couette-Taylor reactor, and the apparatus further includes a temperature control means for keeping the internal temperature of each of the first and second Couette-Taylor reactors constant.